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liliconcom

Displayed curve for Fit Special with Log transform is incorrect

In Fit Y by X, if you choose Fit Special from the red triangle and ask for a 2nd-order (or higher) equation with a natural log transform imposed on x axis (log transform used both in Fit Special and in X Axis Properties) you don’t get the right plot of the equation. (The quadratic relationship, shown in green below, doesn't look like a quadratic curve. It actually starts as a linear line and then takes on its curvature. This is probably due to poor gridding choices when drawing the prediction curve). This fix didn't make it into JMP 10 or JMP 11. It looks a little better in JMP 12 but still needs work.

JMP 9/10/11:

JMP 12:

mjoner

Re: Displayed curve for Fit Special with Log transform is incorrect - Status changed to: Delivered

Re: Displayed curve for Fit Special with Log transform is incorrect

Yes I saw that in 13EA8. I spent a few minutes trying to break it and couldn't. Good work.